-[2m-3(m-n+1)-2]-1化简
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-[2m-3(m-n+1)-2]-1化简
-[2m-3(m-n+1)-2]-1化简
-[2m-3(m-n+1)-2]-1化简
-[2m-3(m-n+1)-2]-1
=-[2m-3m+3n-3-2]-1
=-(-m+3n-5)-1
=m-3n+5-1
=m-3n+4
-(2m-3m+3n-3-2)-1
=-(-m+3n-5)-1
=m-3n+5-1
=m-3n+4
(1),(-m-n)(-m+n) (2),(-m+n)(m-n)
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(m+n)(m-n)-(1-2n)化简
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化简1/6m-4n-1/6m+4n-3m/4n^2-9m^2
因式分解m^2-(n+1)m+n
(m-2n)^2+(3m-n)(2m+2n)-(2m+n)(2m-n) 已知m+n=4 mn=1
1/m-n,2/n^2-m^2,3n/2(m+n)通分
m^2=n+2,n^2=m+2(m不等于n),求m^3-2mn+n^3的值因为m^2=n+2,n^2=m+2 所以 m^2-n^2=n-m 即 (m-n)(m+n)=n-m m+n=1为什么得m+n=1,求详解.
-[2m-3(m-n+1)-2]-1化简
-5m(-m+3n)+4m(-4m-5/2n),其中m=2,n=-1
(2m+n)(2m-n)+n(2m+n)-8m^2n^3/(2n^3) m=-2分之1,n=2013
若2m=3n,求分式(1+m/n-n/n-m)除以(1-m/n-n/n+m)的值
若2m=3n,求分式(1+m/n-n/n-m)除以(1-m/n-n/n+m)的值
(m-2n-1)(m-2n-1)=?化简
化简:|2(-m+1)|-|n-2|+2|m-n|